25808801 has 2 divisors, whose sum is σ = 25808802. Its totient is φ = 25808800.

The previous prime is 25808791. The next prime is 25808831. The reversal of 25808801 is 10880852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25806400 + 2401 = 5080^2 + 49^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25808801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25808831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12904400 + 12904401.

It is an arithmetic number, because the mean of its divisors is an integer number (12904401).

Almost surely, 2^25808801 is an apocalyptic number.

It is an amenable number.

25808801 is a deficient number, since it is larger than the sum of its proper divisors (1).

25808801 is an equidigital number, since it uses as much as digits as its factorization.

25808801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 25808801 is about 5080.2363134012. The cubic root of 25808801 is about 295.5216319054.

The spelling of 25808801 in words is "twenty-five million, eight hundred eight thousand, eight hundred one".